CAJ | 학술논문

机场飞行区下施工容易造成上覆土体的沉陷，从而引起隧道上部埋置管道的局部下沉，并使管道产生较高的附加应力。通过对下穿盾构施工时所产生的土体下沉位移进行分析，探讨管道不同部位的沉陷分布规律计算模型；应用 ABAQUS 有限元软件对管道下盾构施工过程进行数值模拟，分别反映施加不同附加荷载情况以及不同管－隧相对位置下埋置管道力学状态改变。理论分析和数值模拟结果表明：航油管道埋深较浅，管道呈受压状态且受飞机附加荷载影响应力增幅较大；管道与隧道的垂直间距过小，管道呈受拉状态而易引起受拉破坏。以安全评价方法为指标，可确定航油管道的临界埋深与管－隧间距。
궤장비행구하시공용역조성상복토체적침함，종이인기수도상부매치관도적국부하침，병사관도산생교고적부가응력。통과대하천순구시공시소산생적토체하침위이진행분석，탐토관도불동부위적침함분포규률계산모형；응용 ABAQUS 유한원연건대관도하순구시공과정진행수치모의，분별반영시가불동부가하재정황이급불동관－수상대위치하매치관도역학상태개변。이론분석화수치모의결과표명：항유관도매심교천，관도정수압상태차수비궤부가하재영향응력증폭교대；관도여수도적수직간거과소，관도정수랍상태이역인기수랍파배。이안전평개방법위지표，가학정항유관도적림계매심여관－수간거。
Shield boring underneath airport area may cause ground settlement,which may,in turn,cause local settlement and high additional stress to the aviation oil pipeline buried in the ground.In this paper,the settlement and displacement of the ground induced by shield boring are analyzed,and the calculation models for the settlement of the aviation oil pipeline at different locations are discussed.The shield boring crossing underneath the aviation oil pipeline is numerically simulated by means of ABAQUS finite element software,and the mechanical behavior of the aviation oil pipeline under different additional loads and different distances between aviation oil pipeline and shield tunnel are studied.The theoretical analysis and numerical simulation results show that:1 )Due to the shallow cover depth,the aviation oil pipeline is under loading pressure,and the stress on the aviation oil pipeline increases dramatically under the action of the airplane load.2)The aviation oil pipeline will be destroyed when the distance between the aviation oil pipeline and the shield tunnel is too small.The critical cover depth of the aviation oil pipeline and the critical distance between the aviation oil pipeline and the shield tunnel can be determined by means of safety assessment method.